dac manual v130
TRANSCRIPT
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user'sguideto
12bit-DACExpand development system capabilities by
adding 12bit Digital to Analog Converter
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I want to express my thanks to you for being interested in our products and for havingcondence in Mikroelektronika.
The primary aim of our company is to design and produce high quality electronic products
and to constantly improve the performance thereof in order to better suit your needs.
The Microchip, Atmel, NXP and CYPRESS name, logo and products names are trademarks of Microchip, Atmel, NXP and CYPRESS Inc. in the U.S.A. and other count
TO OUR VALUED CUSTOMERS
Nebojsa Matic
General Manager
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Page 3
Introduction to 12bit-DAC 4
Key features 4
System Specication 5
1. Connecting with development system 6
2. DIP switch settings 7
3. Connecting 12bit-DAC with analog device 8
4. Jumper settings for reference voltage 9
5. Schematic 10
6. Dimensions 11
Table of Contents
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Page 4
Introductionto12bit-DAC
Accessory board is designed for usage with vari
development systems and other MCU dev
with 2x5 header. 12bit -DAC additional bo
is designed for Digital to Analog Conversion.
communicate with MCU accessory board use se
SPI interface.
01
02
03
04
05
Pads with female 2x5 header on back
side of the board
DIP switch for pin selection
MCP4921 chip
Two pole screw terminal CN2
Jumpers for selecting reference voltag
Key features
01
02
03
04
05
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System Specifcation
power supply
3.3V to 5V DC depends on
development system in use
board dimensions
49.59 x 23.88mm (1.95 x 0.94)
weight
~9g (0.02 lbs)
power consumption
max 50mA ( current at supply pins)
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In order to connect 12bit-DAC to dierent development
system it is necessary to make settings on DIP switch
SW1. Every pin on DIP switch SW1 is connected to
dierent pin of 2x5 female header. In table 1 is given list
which switch on DIP switch SW1 should be turned ON for
dierent development system.
Development system: Turn ON switch number: Pin on female 2x5 header: Pin function:
EasyPIC, BIGPIC, LV18F, Easy LV18F, Easy 24-33 4 P3 SCK
Easy dsPIC 1 P3 MOSI
BIGdsPIC, dsPIC PRO, EasyARM 5 P4 SCK
EasyPIC, BIGPIC, LV18F, Easy LV18F, Easy 24-33,
EasyAVR6, Easy 80512 P5 MOSI
BIGdsPIC, dsPIC PRO, EasyARM 3 P6 MOSI
EasydsPIC 3 P6 SCK
EasyAVR, Easy 8051 7 P7 SCK
All development systems 8 P1 CS
2.DIPswitchsettings
Figure 2-1: DIP switch
with 2x5 female header
Table 1
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In order to connect 12bit-DAC accessory board with
analog device it is necessary to provide twisted wires or
shielded cable which is good choice if cable goes thru
electrically noisy environment.
Figure 3-1: 12bit-DAC connected
with other device via wire
3.Connecting12bit-DAC
withanalogdevice
VOUTGND
Figure 3-2: 12bit-DAC
screw terminal pinout
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4.Jumpersettingsfor
referencevoltage
In order to set reference voltage (Vref) it is necessary to place jumper J1 in adequate
position. To use reference voltage of 4.096V place jumper J1 to 4.096 position, Figure
4-1. For VCC reference voltage (3.3V or 5V depends on development system in use)
place jumper J1 in VCC position, Figure 4-2.
Figure 4-1: Ref. voltage is 4.096V
Figure 4-2: Ref. voltage is VCC
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5.Schematic
VOUT
GND
Vref
LDAC
VCC
CS
SCK
SDI
VCC
R1
100
VIN
VOUT
MCP1541
GND
REF1
4.096V
Vref
U1
CS
CS
CN2
MCP4921
E1
10uF
VCC
VCC
J1
SW1
R2
10K
MOSI
MOSI
SCKSCK
VCC
CN1
P4
P3
P5
P6
P3
P4
P6
P7
P1
P1
P3
P5
P6 P7 C1
100nF
VCC
Figure 5-1: Connection schematic
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Figure 6-1: Dimensions
49.59mm(1.95')
16
.36
mm
(0.6
4')
23
.88mm
(0
.94')
7.51mm(0.30')
6.Dimensions
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Page 12
Notes:
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Page 13
Notes:
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Page 14
Notes:
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Page 15
DISCLAIMER
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conditions of merchantability or tness for a particular purpose.
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TRADEMARKS
The Mikroelektronika name and logo, the Mikroelektronika logo, mikroC, mikroC PRO, mikroBasic, mikroBasic PRO, mikroPascal, mikroPascal PRO, AVR
PICash, dsPICprog, 18FJprog, PSOCprog, AVRprog, 8051prog, ARMash, EasyPIC5, EasyPIC6, BigPIC5, BigPIC6, dsPIC PRO4, Easy8051B, EasyARM, EasyAV
EasyAVR6, BigAVR2, EasydsPIC4A, EasyPSoC4, EasyAVR Stamp LV18FJ, LV24-33A, LV32MX, PIC32MX4 MultiMedia Board, PICPLC16, PICPLC8 PICP
SmartGSM/GPRS, UNI-DS are trademarks of Mikroelektronika. All other trademarks mentioned herein are property of their respective companies.
All other product and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and
only used for identication or explanation and to the owners benet, with no intent to infringe.
Mikroelektronika, 2011, All Rights Reserved.
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12bit-DACv1.30